The school has always been the most important means of transferring the wealth of tradition from one generation to the next. This applies today in an even higher degree than in former times, for through modern development of economic life, the family

Physics is an attempt conceptually to grasp reality as something that is considered to be independent of its being observed. In this sense one speaks of physical reality.

The ideals which have always shone before me and filled me with the joy of living are goodness, beauty, and truth.

Energy cannot be created or destroyed, it can only be changed from one form to another.

Man, surrounded by facts, permitting himself no surprise, no intuitive flash, no great hypothesis, no risk, is in a locked cell. Ignorance cannot seal the mind and imagination more securely.

The only race I know is the human one.

Genius is 1% talent and 99% percent hard work.